import com.google.common.base.Joiner;
import java.util.List;
import java.util.Map;

public class Generics1 {

  public void testGenerics() {
    final List<String> list = new ArrayList<>();
    StringBuilder sb = new StringBuilder();
    StringBuilder sb2 = Joiner.on(", ").appendTo(sb, list);
  }

  private int getInt() {
    return 1;
  }

  public Long testGenerics() {
    final List<Map<String, Long>> list = new ArrayList<>();
    return list.get(0).get("");
  }
}
